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This review discusses the nature, origin, and treatments of dandruff, with a focus on the role of *Malassezia* spp. and other triggering factors, but reports no new research findings.

In this study, researchers developed thermoresponsive nanogels that effectively penetrate hair follicles and release a model drug when triggered by temperature, demonstrating greater penetration for medium to large nanogels (300–500 nm) compared to smaller ones.

This study found that testosterone and 5α-dihydrotestosterone induced apoptosis in dermal papilla cells from nonbalding scalp regions, suggesting a high androgen stimulus can trigger cell death related to androgenetic alopecia.

In this study, researchers found that SIRT7 activates quiescent hair follicle stem cells to promote hair growth in mice by triggering the telogen-to-anagen cycle transition, with potential implications for age-related hair loss.

In this study, researchers investigated the penetration and cellular responses to nanoplastics in human skin models with compromised barriers, finding that nanoplastics can penetrate the skin, accumulate in cells, and trigger inflammatory responses through specific signaling pathways.

This paper examines crisis management models within sport marketing and sponsorship, focusing on the brand risks of athlete-triggered crises, and calls for further research in this area; it does not report new results.

This review focuses on recent advances in smart responsive polymer microneedles, which offer precise, on-demand drug delivery triggered by external or physiological stimuli, highlighting significant research implications for transdermal drug administration according to this source.

This study found that women with androgenetic alopecia showing a positive immunoreactant profile responded well to combined therapy with minocycline, topical steroids, and red light, indicating an immunologically driven trigger.

In this case report, a patient with a history of discoid lupus erythematosus experienced an exacerbation of the condition after topical immunotherapy for alopecia areata, suggesting contact dermatitis as a potential trigger.

This study found that injecting interferon gamma into C3H/HeJ mice did not alter the frequency or onset of alopecia areata, suggesting the protein alone does not trigger the disease.

This case study suggests that treatment with Pil-Food, intended for hair loss prevention, may have triggered postinfantile giant cell hepatitis with autoimmune characteristics, which showed a rapid and effective response to corticosteroid therapy.

This study found that telogen effluvium, a type of hair loss, was prevalent among 24% of COVID-19 patients, likely triggered by stress and medication related to the illness.

This study suggests that STAT3 signaling in keratinocytes is crucial for maintaining skin homeostasis by regulating hair follicle-specific keratin genes, potentially impacting dermatitis development through microbe-triggered inflammatory responses.

This study created a novel classification for dermatological and cosmiatric changes caused by cancer treatments, categorizing them as triggered, exacerbated, or unrelated to the treatment.

This case report describes a 40-year-old woman who developed erythema annulare centrifugum, a type of skin rash, likely triggered by taking the drug aceclofenac.

This review discusses different types of telogen effluvium, highlighting that most cases seen by dermatologists are autoimmune-related, with stress as a triggering factor, and reports no new clinical findings.

This study found that Caspase-1, traditionally viewed as an inflammasome component, is secreted upon wounding and plays a novel role by triggering hair follicle stem cell migration into the epidermis, offering insights into epithelial hyperplasia mechanisms in inflammatory skin conditions.

In this systematic review, researchers examined the occurrence and treatment of penile keloids and found that circumcision is a common trigger, particularly in prepubescent children. Despite various therapeutic approaches, penile keloids are rare, complicating further study of this condition.

This study describes the first reported case of a 37-year-old woman developing alopecia universalis after switching from rituximab to ocrelizumab for progressive multiple sclerosis, suggesting that ocrelizumab may trigger autoimmune reactions in immunocompromised patients.

This case report describes a 2-year-old boy in critical condition who developed anagen effluvium, possibly due to hypotension and hypoxia triggering hair follicle apoptosis.

In this case report, a patient with end stage renal disease and sickle cell trait experienced recurrent priapism episodes after starting oral minoxidil for hypertension, which resolved after discontinuing the medication, suggesting minoxidil as a potential trigger in susceptible individuals.

This study suggests that biallelic loss of the Hedgehog signaling repressor Patched alone in Keratin 5+ epidermal cells is insufficient to drive basal cell carcinoma development unless exogenous stimuli trigger accumulation of BCC precursor cells.

This case report describes a 7-year-old boy with medulloblastoma who developed central precocious puberty, potentially triggered by the mass effect of the tumor, which was managed with leuprolide.

This case study documented the first known instance of biopsy-confirmed lichen planopilaris occurring after hairline-lowering surgery in a patient without prior history, highlighting a potential complication where surgical trauma may trigger immune-mediated hair loss.

This case study describes a 34-year-old male developing painful inflammatory scalp nodules post-scalp microinfusion of medication. The findings suggest that repeated microtrauma or bacterial colonization might trigger dissecting cellulitis in susceptible individuals, with exogenous testosterone as a potential modifier, not a direct cause.

This narrative account, reported by C&EN, describes how Houston's use of a hormone-related hair loss treatment may have triggered unexpected panic attacks, contributing to ongoing mental health challenges, and highlights broader issues with mental health disorders that resist traditional treatments.

This study highlights the underexplored allergenic potential of Trichophyton rubrum, a dermatophyte, which can trigger IgE-mediated allergic reactions and a Th2 immune response shift, underscoring the need for its inclusion in diagnostic panels and further research for treating chronic mycoses and related allergies.

This study developed a novel, 3D-printed dissolving microneedle system for delivering minoxidil to treat hair loss, which showed pH-triggered drug release and enhanced hair regrowth in an alopecia mouse model, offering a potentially sustainable and safe transdermal therapy option.

In this study, researchers developed EPO-derived peptides that enhanced hair growth by stimulating dermal papilla cells and increasing IGF-1 expression without triggering systemic erythropoietic effects in tested models, indicating a promising approach for treating hair loss.

This case study reports a rare instance of both alopecia areata and fixed drug eruption occurring in the same area on a 40-year-old man's beard, triggered by oral paracetamol, highlighting potential shared pathogenic pathways and the isotopic phenomenon.